Related terms:
geoid
mean
sqrt
stadia
miletus
sphere
spheroid
radius
per degree
geographia
ellipsoid
mean radius
mappa mundi
estimate
anaximander
latitude
arabic miles
earth radius
cartography
spherical
planetary
approximate
geography
circumference
spherical earth
century bce
geographical
measurement
middle ages
ancient greek
Wikipedia sources:
Eratosthenes
Archimedes
Flat Earth
Earth radius
Geography
History of cartography
Spherical Earth
Astronomical unit
History of mathematics
Context for words:
eratosthenes
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